18193049794 has 16 divisors (see below), whose sum is σ = 28173300480. Its totient is φ = 8802020880.

The previous prime is 18193049779. The next prime is 18193049867. The reversal of 18193049794 is 49794039181.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 793017 + ... + 815635.

It is an arithmetic number, because the mean of its divisors is an integer number (1760831280).

Almost surely, 2^18193049794 is an apocalyptic number.

18193049794 is a deficient number, since it is larger than the sum of its proper divisors (9980250686).

18193049794 is a wasteful number, since it uses less digits than its factorization.

18193049794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35625.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 18193049794 in words is "eighteen billion, one hundred ninety-three million, forty-nine thousand, seven hundred ninety-four".